Syntax error What does immutable mean? Which Python types are mutable and which are not?

What does immutable mean? Which Python types are mutable and which are not?

In Python, there are two types of Objects.

  • Mutable Object
  • Immutable Object

Mutable: Mutable objects are modified, (i.e) objects are a changeable list, set, dict, etc are mutable.

mutable objects are easy to change.

Example 1

list =["Tutorials ","Point", "Pvt","Ltd"]
list[2]= 'Tutorix'
list

Output

['Tutorials ', 'Point', 'Tutorix', 'Ltd']

Example 2

list=['Car','Bike','Scooty','Bus','Metro']
list[4]= 'Bicycle'
list

Output

['Car', 'Bike', 'Scooty', 'Bus', 'Bicycle']


Immutable: immutable objects are not modified (i.e) not changeable int, float, bool, str, tuple, Unicode, etc ... are immutable. immutable objects are expensive and difficult to change. a tuple is enclosed within the parenthesis tuples are immutable and can't be changed.

Example 1

tuple=('1','2','Python','Perl')
tuple

Output

('1', '2', 'Python', 'Perl')

Example 2

tuple=('1','2','Python','Perl')
tuple[4]='2019'
tuple

Output

TypeError Traceback (most recent call last)
in
1 tuple=('1','2','Python','Perl')
----> 2 tuple[4]='2019'
3 tuple
TypeError: 'tuple' object does not support item assignment


tuple object cant be changed by seeing above output you get a clear understanding

Updated on: 2019-07-30T22:30:26+05:30

512 Views

Kickstart Your Career

Get certified by completing the course

Get Started
Advertisements